CN104944408A - Transferring method of carbon nano-tube array and preparation method of carbon nano-tube structure - Google Patents
Transferring method of carbon nano-tube array and preparation method of carbon nano-tube structure Download PDFInfo
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- CN104944408A CN104944408A CN201410124924.2A CN201410124924A CN104944408A CN 104944408 A CN104944408 A CN 104944408A CN 201410124924 A CN201410124924 A CN 201410124924A CN 104944408 A CN104944408 A CN 104944408A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B82—NANOTECHNOLOGY
- B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
- B82Y40/00—Manufacture or treatment of nanostructures
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- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B32/00—Carbon; Compounds thereof
- C01B32/15—Nano-sized carbon materials
- C01B32/158—Carbon nanotubes
- C01B32/168—After-treatment
Abstract
The invention provides a transferring method of a carbon nano-tube array. The transferring method comprises the steps of providing a substitutive substrate and a growth substrate, wherein the surface of the growth substrate is provided with a carbon nano-tube array; arranging the substitutive substrate on the second surface of the carbon nano-tube array, and providing water between the substitutive substrate and the second surface of the carbon nano-tube array; changing the water located between the substitutive substrate and the second surface of the carbon nano-tube array into ice; leaving the substitutive substrate away from the growth substrate through moving at least one of the substitutive substrate and the growth substrate to further separate the carbon nano-tube array from the growth substrate, and transferring the carbon nano-tube array to the substitutive substrate; and heating to remove the ice located between the substitutive substrate and the carbon nano-tube array, wherein the form of the carbon nano-tube array can ensure that a carbon nano-tube structure can also be continuously drawn from the carbon nano-tube array after the ice is removed.
Description
Technical field
The present invention relates to a kind of transfer method of carbon nano pipe array and the preparation method of carbon nanotube structure, particularly relate to a kind of transfer method of carbon nano pipe array and the preparation method of carbon nano-tube film or carbon nano tube line.
Background technology
Carbon nanotube (Carbon Nanotube, CNT) is a kind of hollow tubular thing be rolled into by graphene film, and it has excellent mechanics, calorifics and electrical properties, therefore has wide Application Areas.Because single-root carbon nano-tube is of a size of nano level, be difficult to be used, multiple carbon nanotube as starting material, is made the macroscopic carbon nanotube structure with large-size by people's trial.The macroscopical membrane structure such as formed by multiple carbon nanotube, i.e. carbon nano-tube film (Carbon Nanotube Film), and the macroscopical linear structure formed by multiple carbon nanotube, i.e. carbon nano tube line (Carbon Nanotube Wire).
Notification number is disclose in the Chinese invention patent of CN101458975B a kind ofly from carbon nano pipe array, directly to pull the carbon nano-tube film obtained, this carbon nano-tube film has good transparency, and there is macro-scale and can self-supporting, it comprise multiple under van der Waals interaction end to end carbon nanotube.Directly from array, pull carbon nanotube in the carbon nano-tube film obtained extend substantially in the same direction due to this, therefore, it is possible to play preferably the various excellent properties such as conduction that carbon nanotube axially has and heat conduction, there is application prospect very widely, such as, can be applied to the multiple fields such as touch-screen, liquid-crystal display, loud speaker, heating unit, thin film transistor, photodiode and conductor cable.
The formation basic theory of this special carbon nano-tube film is combined closely by Van der Waals force between carbon nanotube in the carbon nano pipe array of super in-line arrangement growth, make when pulling part carbon nanotube, carbon nanotube adjacent with it can end to endly be drawn out due to the effect of Van der Waals force, thus forms a carbon nano-tube film be made up of end to end carbon nanotube gradually.But, owing to only attracting each other and film forming by Van der Waals force between carbon nanotube, once the form of array is destroyed or change, just likely cause pulling out uniform carbon nano-tube film, therefore traditional way is after growth substrate (being generally monocrystalline silicon piece) surface growth array, and that directly carries out carbon nano-tube film to the carbon nano pipe array in growth substrate pulls operation.
Therefore, the producer of carbon nano pipe array is actual is that array is supplied to client in the lump together with growth substrate.But this not only makes the return period of growth substrate elongated, be unfavorable for the growth putting into new array fast, also easily make expensive monocrystalline silicon piece be destroyed in transit and scrap.In addition, also pull from carbon nano pipe array by same principle and obtain carbon nano tube line, and on manufacture, there are the problems referred to above equally in carbon nano tube line.
Summary of the invention
In view of this, necessaryly a kind of transfer method of the carbon nano pipe array that can solve the problem and the preparation method of carbon nanotube structure is provided.
A kind of transfer method of carbon nano pipe array, comprise the following steps: a replacement substrate and a growth substrate are provided, this growth substrate surface has carbon nano pipe array, this carbon nano pipe array is first surface near the surface of this growth substrate, surface away from this growth substrate is second surface, and the form of this carbon nano pipe array can make a carbon nanotube structure pull out from this carbon nano pipe array; This replacement substrate is arranged on the second surface of this carbon nano pipe array, and makes, between this replacement substrate and second surface of this carbon nano pipe array, there is water; The water between this replacement substrate and the second surface of this carbon nano pipe array is made to become ice; By at least one party in this replacement substrate mobile and this growth substrate, make this replacement substrate and this growth substrate away from, thus this carbon nano pipe array is separated with this growth substrate, and is transferred to this replacement substrate; And by the ice of removal between this replacement substrate and this carbon nano pipe array that heats up, after removing ice, the form of this carbon nano pipe array still can make a carbon nanotube structure pull out continuously from this carbon nano pipe array, and this carbon nanotube structure comprises multiple end to end carbon nanotube.
A kind of preparation method of carbon nanotube structure, comprise the following steps: a replacement substrate and a growth substrate are provided, this growth substrate surface has carbon nano pipe array, this carbon nano pipe array is first surface near the surface of this growth substrate, surface away from this growth substrate is second surface, and the form of this carbon nano pipe array can make a carbon nanotube structure pull out from this carbon nano pipe array; This replacement substrate is arranged on the second surface of this carbon nano pipe array, and makes, between this replacement substrate and second surface of this carbon nano pipe array, there is water; The water between this replacement substrate and the second surface of this carbon nano pipe array is made to become ice; By at least one party in this replacement substrate mobile and this growth substrate, make this replacement substrate and this growth substrate away from, thus this carbon nano pipe array is separated with this growth substrate, and is transferred to this replacement substrate; Remove the ice between this replacement substrate and this carbon nano pipe array by heating up, after removing ice, the form of this carbon nano pipe array still can make a carbon nanotube structure pull out continuously from this carbon nano pipe array; And pulling this carbon nanotube structure from the suprabasil carbon nano pipe array of this replacement, this carbon nanotube structure comprises multiple end to end carbon nanotube.
A kind of transfer method of carbon nano pipe array, comprise the following steps: one first substrate and one second substrate are provided, this first substrate surface has carbon nano pipe array, this carbon nano pipe array is first surface near the surface of this first substrate, surface away from this first substrate is second surface, and the form of this carbon nano pipe array can make a carbon nanotube structure pull out from this carbon nano pipe array; This second substrate is arranged on the second surface of this carbon nano pipe array, and makes, between this second substrate and second surface of this carbon nano pipe array, there is water; The water between this second substrate and the second surface of this carbon nano pipe array is made to become ice; By at least one party in this second substrate mobile and this first substrate, make this second substrate and this first substrate away from, thus this carbon nano pipe array is separated with this first substrate, and is transferred to this second substrate; And by the ice of removal between this second substrate and this carbon nano pipe array that heats up, after removing ice, the form of this carbon nano pipe array still can make a carbon nanotube structure pull out continuously from this carbon nano pipe array, and this carbon nanotube structure comprises multiple end to end carbon nanotube.
Compared to prior art, in the transfer method of described carbon nano pipe array and the preparation method of carbon nanotube structure, in growth phase and membrane stage, carbon nano pipe array is arranged at different base, and the substrate as the membrane stage can select cheap material manufacture.Therefore, array can be transferred to and replace, in substrate, replacement substrate is supplied to client together with array, and growth substrate costly to reclaim rapidly, thus optimizing Production Flow Chart by the producer of carbon nano pipe array.Therefore, the transfer method of carbon nano pipe array of the present invention and the preparation method of carbon nanotube structure have very important meaning for carbon nano-tube film and line application industrially, can bring actual cost reduction and the change of the mode of production.
Accompanying drawing explanation
The schematic diagram of the transfer method of the carbon nano pipe array that Fig. 1 provides for the embodiment of the present invention.
Fig. 2 is the stereoscan photograph that the embodiment of the present invention pulls the carbon nano-tube film obtained from carbon nano pipe array.
The schematic diagram of the transfer method of the carbon nano pipe array that Fig. 3 provides for one embodiment of the invention.
The schematic diagram of the transfer method of the carbon nano pipe array that Fig. 4 provides for another embodiment of the present invention.
The schematic diagram of the preparation method of the carbon nanotube structure that Fig. 5 provides for the embodiment of the present invention.
Fig. 6 is the photo that the embodiment of the present invention pulls carbon nano-tube film from the carbon nano pipe array being transferred to replacement substrate surface.
Main element nomenclature
| Carbon nano pipe array | 10 |
| First surface | 102 |
| Second surface | 104 |
| Growth substrate | 20 |
| Replace substrate | 30 |
| Carbon nanotube structure | 40 |
| Withdrawing tool | 50 |
| Water | 60 |
| Ice | 60’ |
| Cryostat | 70 |
Following embodiment will further illustrate the present invention in conjunction with above-mentioned accompanying drawing.
Embodiment
Below with reference to accompanying drawing, the transfer method of carbon nano pipe array of the present invention and the preparation method of carbon nanotube structure are described in further detail.
Refer to Fig. 1, the invention provides a kind of transfer method of carbon nano pipe array 10, comprise the following steps:
S1, one replacement substrate 30 and a growth substrate 20 is provided, this growth substrate 20 surface has carbon nano pipe array 10, this carbon nano pipe array 10 is first surface 102 near the surface of this growth substrate 20, surface away from this growth substrate 20 is second surface 104, and the form of this carbon nano pipe array 10 can make a carbon nanotube structure 40 pull out continuously from this carbon nano pipe array 10;
S2, is arranged on the second surface 104 of this carbon nano pipe array 10 by this replacement substrate 30, and makes to have water 60 between this replacement substrate 30 and second surface 104 of this carbon nano pipe array 10;
S3, makes the water 60 between this replacement substrate 30 and the second surface 104 of this carbon nano pipe array 10 become ice 60 ';
S4, by this replacement substrate 30 mobile and at least one party in this growth substrate 20, make this replacement substrate 30 and this growth substrate 20 away from, thus this carbon nano pipe array 10 is separated with this growth substrate 20, and is transferred to this replacement substrate 30; And
S5, removes ice 60 ' between this replacement substrate 30 and this carbon nano pipe array 10 by heating up, and after removing ice 60 ', this carbon nano pipe array 10 maintains this form this carbon nanotube structure 40 still can be pulled out continuously from this carbon nano pipe array 10.
This carbon nanotube structure 40 comprises end to end carbon nanotube, is to be combined with each other and the macrostructure formed that joins end to end by Van der Waals force by multiple carbon nanotube, such as, can be carbon nano-tube film or carbon nano tube line.
First to being grown on this growth substrate 20 and the carbon nano pipe array 10 that therefrom can pull carbon nano-tube film 40 is introduced.
This carbon nano pipe array 10 is grown on the surface of this growth substrate 20 by the method for chemical vapour deposition.Carbon nanotube in this carbon nano pipe array 10 is substantially parallel to each other and surperficial perpendicular to growth substrate 20, contacts with each other and combined by Van der Waals force between adjacent carbon nanotube.This carbon nano pipe array 10 comprises a first surface 102 and the second surface 104 relative with this first surface 102.Carbon nanotube grows from the surface of growth substrate 20, and form carbon nano pipe array 10, carbon nanotube is bottom near one end of this growth substrate 20, and the one end away from growth substrate 20 is top.In this growth substrate 20, this first surface 102 is formed jointly by the bottom of all carbon nanotubes in this carbon nano pipe array 10, this second surface 104 is formed jointly by the top of all carbon nanotubes in this carbon nano pipe array 10, the first surface 102 of this carbon nano pipe array 10 near or be arranged on the surface of this growth substrate 20, this second surface 104 is the surface away from this growth substrate 20.
By controlling growth conditions, substantially not containing impurity in this carbon nano pipe array 10, as agraphitic carbon or residual catalyst metal particles etc.Due to the substantially free from foreign meter and mutual close contact of carbon nanotube, between adjacent carbon nanotube, there is larger Van der Waals force, be enough to make when pulling some carbon nanotubes (carbon nanotube fragment), adjacent carbon nanotube can be made to be joined end to end by the effect of Van der Waals force, continuously pull out, form continuous print self-supporting macrostructure thus, as carbon nano-tube film or carbon nano tube line.This end to end carbon nano pipe array 10 from wherein pulling out continuously of carbon nanotube that can make is also referred to as super in-line arrangement carbon nano pipe array 10.The material of this growth substrate 20 can be the substrate that the applicable growths such as P-type silicon, N-type silicon or silicon oxide surpass in-line arrangement carbon nano pipe array 10.
This carbon nanotube structure 40 pulled out continuously from carbon nano pipe array 10 comprises multiple end to end carbon nanotube.More specifically, this carbon nanotube structure 40 is the carbon nano-tube film that can realize self-supporting, and this carbon nano-tube film comprises multiple substantially along the carbon nanotube of equidirectional arrangement.Refer to Fig. 2, in this carbon nano-tube film, carbon nanotube is for be arranged of preferred orient in the same direction.Described preferred orientation refers to the overall bearing of trend of most of carbon nanotube in carbon nano-tube film substantially in the same direction.And the overall bearing of trend of described most of carbon nanotube is basically parallel to the surface of this carbon nano-tube film.Further, in described carbon nano-tube film, most carbon nanotube is joined end to end by Van der Waals force.Particularly, in the most of carbon nanotubes extended substantially in the same direction in described carbon nano-tube film, each carbon nanotube and carbon nanotube adjacent are in the direction of extension joined end to end by Van der Waals force, thus enable this carbon nano-tube film realize self-supporting.Certainly, there is the carbon nanotube of minority random alignment in described carbon nano-tube film, these carbon nanotubes can not form obviously impact to the overall orientation arrangement of carbon nanotube most of in carbon nano-tube film.Further, described carbon nano-tube film can comprise multiple continuously and the carbon nanotube fragment aligned.The plurality of carbon nanotube fragment is joined end to end by Van der Waals force.Each carbon nanotube fragment comprises multiple carbon nanotube be parallel to each other, and the plurality of carbon nanotube be parallel to each other is combined closely by Van der Waals force.In addition, the most carbon nanotube extended substantially in the same direction in described carbon nano-tube film nisi linearity, can be suitable bending; Or and non-fully arranges according on bearing of trend, can be suitable depart from bearing of trend.Therefore, can not get rid of and may to there is part contact substantially in the same direction between carbon nanotube arranged side by side in the most carbon nanotubes extended of carbon nano-tube film and situation that part is separated.In fact, this carbon nano-tube film has comparatively Multiple level, has gap between namely adjacent carbon nanotube, makes this carbon nano-tube film can have good transparency.But the Van der Waals force of the part connected between the part of the Contact of adjacent carbon nanotubes and end to end carbon nanotube has enough maintained the self-supporting of this carbon nano-tube film entirety.The thickness of this carbon nano-tube film is about 0.5 nanometer to 100 micron, is preferably 0.5 nanometer to 10 micron.When having narrower width, this carbon nanotube structure 40 also can be one can the carbon nano tube line of self-supporting.
Described self-supporting is that this carbon nano-tube film or carbon nano tube line do not need large-area carrier supported, as long as and on one side or relatively both sides provide support power can be unsettled on the whole and keep self membranaceous or wire state, by this carbon nano-tube film or line be placed in (or being fixed on) keep at a certain distance away on two supporters arranging time, the carbon nano-tube film between two supporters or line can the membranaceous or wire states of unsettled maintenance self.Described self-supporting mainly through exist in carbon nano-tube film or line continuously through Van der Waals force join end to end extend arrangement carbon nanotube and realize.
The described preparation method that therefrom can pull the carbon nano pipe array 10 of carbon nano-tube film has been that numerous front case is open, such as, can consult the people such as Feng Chen Chinese patent application CN101239712A disclosed in 13 days Augusts in 2008.
This replacement substrate 30 is solid-state, can be flexible or hard substrate.This replacement substrate 30 has a surface, as the surface arranging this carbon nano pipe array 10.It is this carbon nano pipe array 10 is stood upside down be arranged at this replacement substrate 30 surface that this carbon nano pipe array 10 is transferred to this replacement substrate 30 surface from this growth substrate 20.After this carbon nano pipe array 10 is transferred to this replacement substrate 30, the second surface of this carbon nano pipe array 10 104 near or be arranged on the surface of this replacement substrate 30, this first surface 102 is the surface away from this replacement substrate 30.
In this step S2, this water 60 can be arranged on the second surface 104 of this carbon nano pipe array 10 with the form of trickle water droplet, water smoke or moisture film.Because carbon nanotube does not soak with water 60, therefore can not infiltrate the inside of carbon nano pipe array 10 when the amount of water 60 is less, can not impact the form of carbon nano pipe array.The water droplet of second surface 104 of this carbon nano pipe array 10 and the thickness of the diameter of water smoke and moisture film can be respectively 10 nanometer ~ 300 micron.This replacement substrate 30 contacts with the water 60 of centre respectively with the second surface 104 of this carbon nano pipe array 10.Be appreciated that, in this step S2, carbon nanotube structure 40 still keep the form of this carbon nano pipe array 10 for can be made therefrom to pull out continuously, this replacement substrate 30 does not apply pressure to this carbon nano pipe array 10 as far as possible, even if applying pressure, this pressure also should be less, control change in the form of carbon nano pipe array 10 frequently and carbon nanotube structure 40 cannot be pulled out continuously be as the criterion, such as, do not make the carbon nanotube in carbon nano pipe array 10 topple over.This pressure (f) scope can be 0<f<2N/cm
2.Executing in stressed process to carbon nano pipe array 10, in this carbon nano pipe array 10, carbon nanotube still keeps the state on the surface perpendicular to growth substrate 20 substantially.
In one embodiment, this step S2 can comprise the following steps:
S21, forms one deck water 60 at the second surface 104 of this carbon nano pipe array 10; And
S22, by the surface contact of this replacement substrate 30, this has the second surface 104 of water 60.
In this step S21, water 60 can be formed water droplet or water mist spray this second surface 104 at this carbon nano pipe array 10, namely at the end face of the carbon nano pipe array 10 of this growth substrate 20.
In another embodiment, this step S2 can comprise the following steps:
S21 ', forms one deck water 60 on the surface of this replacement substrate 30; And
S22 ', has the second surface 104 of this carbon nano pipe array 10 of surface contact of water 60 by this replacement substrate 30.
In this step S21 ', water 60 can be formed water droplet or water mist spray on the surface of this replacement substrate 30.
In this step S3, water 60 between this replacement substrate 30 and carbon nano pipe array 10 solidifies and becomes ice 60 ', because this replacement substrate 30 all contacts with water 60 with carbon nano pipe array 10, after water 60 solidifies, this replacement substrate 30 is comparatively firmly combined with carbon nano pipe array 10.For making combination more firm, the material of this replacement substrate 30 can select hydrophilic material.
Refer to Fig. 3, particularly, in one embodiment, the stepped construction of this replacement substrate 30, water 60, carbon nano pipe array 10 and growth substrate 20 can be put into cryostat 70 and be cooled to below freezing.This cryostat 70 can be the refrigeration chamber of refrigerator.
Refer to Fig. 4, in another embodiment, when this step S2 comprises step S21 and S22, when being arranged on the second surface 104 of this carbon nano pipe array 10 by water 60, can first will the temperature of substrate 30 be replaced to be down to below freezing, then the replacement substrate 30 with temperature below freezing is contacted the second surface 104 that this carbon nano pipe array 10 has water 60.Such as can first this replacement substrate 30 placement for some time below freezing in cryostat 70 be taken out again.The temperature of this replacement substrate 30 can directly make the water 60 of this second surface 104 become ice 60 ', and without the need to this stepped construction is put into cryostat 70 again.
In this step S4, this carbon nano pipe array 10 is by being separated with this growth substrate 20 with the combination of this replacement substrate 30.Preferably, all carbon nanotubes in this carbon nano pipe array 10 depart from this growth substrate 20 simultaneously, namely this replacement substrate 30 and the travel direction of at least one party in this growth substrate 20 are the carbon nano tube growth surface perpendicular to this growth substrate 20, make the carbon nanotube in this carbon nano pipe array 10 depart from this growth substrate 20 along the direction of growth of this carbon nanotube.When this replacement substrate 30 is all moved with this growth substrate 20, both travel directions are all perpendicular to the carbon nano tube growth surface of this growth substrate 20.
In this step S5, this heating step can make ice 60 ' be melted into water and dry or directly distil, thus is removed.This removal process does not affect the form of this carbon nano pipe array 10.Because the thickness of ice 60 ' is less, after removing, carbon nano pipe array 10 is directly combined by Van der Waals force with the surface contact of this replacement substrate 30.
Be appreciated that, in the whole process of above-mentioned steps S1 ~ S5, the form of this carbon nano pipe array 10 should be maintained substantially, be as the criterion to make this carbon nanotube structure 40 after removal ice 60 ' still can pull out continuously from this carbon nano pipe array 10.
Need when pulling carbon nanotube structure 40 to make the bonding force between substrate and this carbon nano pipe array 10 less, thus the carbon nanotube in carbon nano pipe array 10 can be end to endly drawn out, thus form this carbon nanotube structure 40.The transfer method of carbon nano pipe array 10 of the present invention in the process of transfer, strengthens carbon nano pipe array 10 by ice 60 ' and replaces the bonding force between substrate 30, carbon nano pipe array 10 can be separated with this growth substrate 20, and before pulling carbon nanotube structure 40, ice 60 ' is removed, make carbon nano pipe array 10 and replace the bonding force between substrate 30 to be reduced to make carbon nanotube structure 40 therefrom pull out continuously.Therefore the material of this replacement substrate 60 is not limit, and can be common hard substrate or flexible substrates, as metal, glass, quartz, silicon, silicon-dioxide, plastics or resin, as polymethylmethacrylate or polyethylene terephthalate.
Refer to Fig. 5, the invention provides a kind of preparation method of carbon nanotube structure 40, except comprising above-mentioned steps S1 to S5, also comprise further:
S6, pulls this carbon nanotube structure 40 from the carbon nano pipe array 10 this replacement substrate 30.
Refer to Fig. 6, the difference of this step S6 and traditional carbon nanotube membrane step is, this carbon nano-tube film is from the carbon nano pipe array 10 being transferred to this replacement substrate 30 surface, but not pulls the carbon nano pipe array 10 on growth substrate 20 surface from direct.In a preferred embodiment, this carbon nano-tube film pulls from being arranged on the carbon nano pipe array 10 on this replacement substrate 30 surface of handstand, namely pulls bottom the original growth of carbon nano pipe array 10.
Described step S6 specifically comprises the following steps: S61, by the selected carbon nanotube fragment of withdrawing tool 50 from the carbon nano pipe array 10 on this replacement substrate 30 surface; S62, by this withdrawing tool 50 mobile, pulls this selected carbon nanotube fragment with certain speed, thus the multiple carbon nanotube fragment of end to end pull-out, and then form a continuous print carbon nanotube structure 40.
In this step S61, when needs pull carbon nano-tube film, the adhesive tape with one fixed width or adherent base bar can be adopted to contact this carbon nano pipe array 10 with a selected carbon nanotube fragment with one fixed width; When needs pull carbon nano tube line, the instrument that end face is narrower can be adopted, as tweezers, choose the carbon nanotube fragment that width is narrower.In this step S62, the direction of growth pulling carbon nanotube in direction and this carbon nano pipe array 10 of this selected carbon nanotube fragment is the angle a that is not 0, is preferably 30 degree ~ 90 degree.
Above-mentioned steps S4 is different from step S6, and the object of step S4 makes carbon nano pipe array 10 entirety depart from this growth substrate 20, still keeps the form of array 10 after disengaging.And be from carbon nano pipe array 10, pull carbon nano-tube film or line in the object of step S6, therefore not make carbon nano pipe array 10 entirety depart from and replace substrate 30, but first make sub-fraction carbon nanotube, as carbon nanotube fragment, depart from and replace substrate 30, move adjacent carbon nanotube fragment by end to end pull-out by the carbon nanotube pieces length of tape of this pull-out again, namely depart from successively and replace substrate 30.
In the preparation method of described carbon nanotube structure, by simply sprinkling water and refrigerating process, carbon nano pipe array can be made and replace substrate mortise, without the need to limiting the material of replacement substrate, and carbon nano pipe array still can carry out membrane after removal ice, thus make growth phase and membrane stage carbon nano pipe array be arranged at different base, substrate as the membrane stage can select cheap material manufacture, and growth substrate costly can reclaim rapidly, thus optimize Production Flow Chart.Therefore, the preparation method of carbon nanotube structure of the present invention has very important meaning for carbon nano-tube film and line application industrially, can bring actual cost reduction and the change of the mode of production.
In addition, those skilled in the art also can do other changes in spirit of the present invention, and certainly, these changes done according to the present invention's spirit, all should be included within the present invention's scope required for protection.
Claims (16)
1. a transfer method for carbon nano pipe array, comprises the following steps:
One replacement substrate and a growth substrate are provided, this growth substrate surface has carbon nano pipe array, this carbon nano pipe array is first surface near the surface of this growth substrate, surface away from this growth substrate is second surface, and the form of this carbon nano pipe array can make a carbon nanotube structure pull out continuously from this carbon nano pipe array;
This replacement substrate is arranged on the second surface of this carbon nano pipe array, and makes, between this replacement substrate and second surface of this carbon nano pipe array, there is water;
The water between this replacement substrate and the second surface of this carbon nano pipe array is made to become ice;
By at least one party in this replacement substrate mobile and this growth substrate, make this replacement substrate and this growth substrate away from, thus this carbon nano pipe array is separated with this growth substrate, and is transferred to this replacement substrate; And
The ice between this replacement substrate and this carbon nano pipe array is removed by heating up, remove this carbon nano pipe array after ice to maintain this form this carbon nanotube structure still can be pulled out continuously from this carbon nano pipe array, this carbon nanotube structure comprises multiple end to end carbon nanotube.
2. the transfer method of carbon nano pipe array as claimed in claim 1, it is characterized in that, this carbon nanotube structure is carbon nano-tube film or carbon nano tube line.
3. the transfer method of carbon nano pipe array as claimed in claim 1, it is characterized in that, this carbon nanotube structure comprises multiple end to end carbon nanotube.
4. the transfer method of carbon nano pipe array as claimed in claim 1, it is characterized in that, between the surface of this replacement substrate and the second surface of this carbon nano pipe array by the combination of ice make this replacement substrate and this growth substrate away from time this carbon nano pipe array be separated with this growth substrate.
5. the transfer method of carbon nano pipe array as claimed in claim 1, it is characterized in that, this makes the step between this replacement substrate and second surface of this carbon nano pipe array with water comprise:
One deck water is formed at the second surface of this carbon nano pipe array; And
By the surface contact of this replacement substrate, this has the second surface of water.
6. the transfer method of carbon nano pipe array as claimed in claim 5, it is characterized in that, this water is water droplet or moisture film at this second surface.
7. the transfer method of carbon nano pipe array as claimed in claim 5, it is characterized in that, the step making the water between this replacement substrate and the second surface of this carbon nano pipe array become ice comprise having temperature below freezing replacement substrate contact this there is the second surface of water.
8. the transfer method of carbon nano pipe array as claimed in claim 1, it is characterized in that, this makes the step between this replacement substrate and second surface of this carbon nano pipe array with water comprise:
One deck water is formed on the surface of this replacement substrate; And
This replacement substrate had the second surface of this carbon nano pipe array of surface contact of water.
9. the transfer method of carbon nano pipe array as claimed in claim 8, it is characterized in that, this water is water droplet or moisture film at this replacement substrate surface.
10. the transfer method of carbon nano pipe array as claimed in claim 1, it is characterized in that, this water is water droplet or moisture film, and the diameter of this water droplet and the thickness of moisture film are respectively 10 nanometer ~ 300 micron.
The transfer method of 11. carbon nano pipe arrays as claimed in claim 1, it is characterized in that, the step making the water between this replacement substrate and the second surface of this carbon nano pipe array become ice comprises to be put into cryostat by the stepped construction of this replacement substrate, water, carbon nano pipe array and growth substrate and is cooled to below freezing.
The transfer method of 12. carbon nano pipe arrays as claimed in claim 1, is characterized in that, in the process of this separation, all carbon nanotubes in this carbon nano pipe array are for depart from this growth substrate simultaneously.
The transfer method of 13. carbon nano pipe arrays as claimed in claim 1, it is characterized in that, the carbon nanotube in this carbon nano pipe array departs from this growth substrate along the direction of growth of this carbon nanotube.
The transfer method of 14. carbon nano pipe arrays as claimed in claim 1, is characterized in that, the travel direction of at least one party in this replacement substrate and this growth substrate is the carbon nano tube growth surface perpendicular to this growth substrate.
The preparation method of 15. 1 kinds of carbon nanotube structures, comprises the following steps:
One replacement substrate and a growth substrate are provided, this growth substrate surface has carbon nano pipe array, this carbon nano pipe array is first surface near the surface of this growth substrate, surface away from this growth substrate is second surface, and the form of this carbon nano pipe array can make a carbon nanotube structure pull out continuously from this carbon nano pipe array;
This replacement substrate is arranged on the second surface of this carbon nano pipe array, and makes, between this replacement substrate and second surface of this carbon nano pipe array, there is water;
The water between this replacement substrate and the second surface of this carbon nano pipe array is made to become ice;
By at least one party in this replacement substrate mobile and this growth substrate, make this replacement substrate and this growth substrate away from, thus this carbon nano pipe array is separated with this growth substrate, and is transferred to this replacement substrate;
Remove ice between this replacement substrate and this carbon nano pipe array by heating up, after removing ice, this carbon nano pipe array maintains this form this carbon nanotube structure still can be pulled out continuously from this carbon nano pipe array; And
Pull this carbon nanotube structure from the suprabasil carbon nano pipe array of this replacement, this carbon nanotube structure comprises multiple end to end carbon nanotube.
The transfer method of 16. 1 kinds of carbon nano pipe arrays, comprises the following steps:
One first substrate and one second substrate are provided, this first substrate surface has carbon nano pipe array, this carbon nano pipe array is first surface near the surface of this first substrate, surface away from this first substrate is second surface, and the form of this carbon nano pipe array can make a carbon nanotube structure pull out continuously from this carbon nano pipe array;
This second substrate is arranged on the second surface of this carbon nano pipe array, and makes, between this second substrate and second surface of this carbon nano pipe array, there is water;
The water between this second substrate and the second surface of this carbon nano pipe array is made to become ice;
By at least one party in this second substrate mobile and this first substrate, make this second substrate and this first substrate away from, thus this carbon nano pipe array is separated with this first substrate, and is transferred to this second substrate; And
The ice between this second substrate and this carbon nano pipe array is removed by heating up, remove this carbon nano pipe array after ice to maintain this form this carbon nanotube structure still can be pulled out continuously from this carbon nano pipe array, this carbon nanotube structure comprises multiple end to end carbon nanotube.
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